320131022221321 has 4 divisors (see below), whose sum is σ = 320131152547200. Its totient is φ = 320130891895444.

The previous prime is 320131022221291. The next prime is 320131022221349. The reversal of 320131022221321 is 123122220131023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320131022221321 - 2¹⁵ = 320131022188553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320131022221921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61406161 + ... + 66415198.

It is an arithmetic number, because the mean of its divisors is an integer number (80032788136800).

Almost surely, 2^{320131022221321} is an apocalyptic number.

It is an amenable number.

320131022221321 is a deficient number, since it is larger than the sum of its proper divisors (130325879).

320131022221321 is a wasteful number, since it uses less digits than its factorization.

320131022221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130325878.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 320131022221321 its reverse (123122220131023), we get a palindrome (443253242352344).

The spelling of 320131022221321 in words is "three hundred twenty trillion, one hundred thirty-one billion, twenty-two million, two hundred twenty-one thousand, three hundred twenty-one".